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J. Pf HEMMINGSEN, or MARSHALLT'OWN, `row-A.- Letters Patent No. 87,412,dated Ma/,rch 2, 1869.

IMPROVEMENT IN SIVIITEIS' BELLOWS.

, *Mrk- To all whom 'itma/y conce/rn Be it known that I, J. P.HEMMrNesEN, of Mar# shalltown, in the county of Marshall, and State ofIowa, have invented a new and useful Improvement in Smiths Bellows; andI do hereby declare that the following Ais a.full, clear, and exactdescription thereof',

.which will enable others skilled in the art to make and use the same,reference being had to the accompany-v ing ldrawings, forming part ofthis specification, in which- Figure l is .a side view of my improvedbellows, parts being broken away to lshow the construction.

Figure 2 is a detail sectional view of the same, taken 'through the linea: x, iig. l.

. Similar letters of reference indicate like parts.

I My inventionA has for its object to improve the construction of theordinary smiths bellows, so that it may receive and retain a supply ofair, to be given ofi' gradually, to keep up a blast upon the fire, toheat one piece of iron while the smith is working upon a piecepreviously heated, without the employment of a bel-A lows-blower beingnecessary; and

1t consists in the arrangement of parts, as Will be hereafter more fullydescribed. i

A are the posts, which form theffeet and frame of the apparatus. y

B is. an ordinary bellows, except that it is made without a nozzle. l

'lhe upper plate ofthe bellows B is stational'y, and is securelyattached to the bottom of the box C.

The lower or movable plate of the bellows B has the lower end of theconnecting-rod D pivoted to its rear end, the upper end of which rod ispivoted to the end of theV arm E, the other end of which is rigidlyattached to theshaft F. y

The shaft F works in bearings in the frame A, and to one of its ,ends isattached the end of the lever G, by which the bellows is worked.

The box-reservoir or chamber C is attached to the frame A, and toitsbottom is attached the top plate of the bellows B.

The top, c', of the box C is made of flexiblel material, Aand in aboutthe'shape of the frustum of a pyramid, so that it may rise above o rsink into ,the box C, according to the amount of air that may be in saidbox.

Upon the top of the exible top or cover c1 is placed a weight, c2,which, by its downward pressure, may force the air out of the box C in asteady stream.

A hole is formed through the bottom ot the box C and the top plate ofthe bellows B, in which -is placed v a valve, H, opening upward, so thatit may be opened by the inward pressure of air from the bellows B, andbe closed by its own weight, or4 by the pressure of the air within saidbox C.

Lis the nozzle or pipe, by which the air is conducted from the chamber Cto the fire.

The inner orifice of the pipe or nozzle I is covered bythe valve-platej, attached to the inner end of the short shaft K, which passes outthrough the wall of the' box C, and to its outer end is attached a leveror handle, L, by.whieh the Valve-plate J is operated, to open, close',or' partially open or close the inner orifice of the nozzle or pipe I,to prevent or regulate the escape of-"the" air lhrogh the said nozzle,as may be required.

Having thus described my invention,

I claim asnew, and' desire to secure by Letters Patentj The arrangementof the bellows B, having a fixed top plate, which vbrms the bottom ofthe air-chamber O, the weighted iiexibl'e cover c, chamfered valve andseat H, nozzle I, valve-plate J, shaft K, and lever L,-

with each other, as herein described,`for the purpose specified.

Witnesses: 'J'. P. HEMMINVGSEN.

J. M. PARKER, DAVID BURNS, H. K IME.

